Leather-glazing machine.



W. B. TURNER. LEATHER GLAZING MACHINE. APPLICATION rum) MAY 15, 1908.

Patented Oct. 31, 1911.

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COLUMBIA PLANOGRAPH CU.\\.\SIIINGTON, D. c.

W. B. TURNER. LEATHER GLAZING MACHINE.

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W. B. TURNER. LEATHER GLAZING MACHINE. APPLICATION FILED MAY 15, 1908.

1,007, 160, Patented Oct. 31, 1911.

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W \L\ Q Ind/anion Witnesses; g,

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UNITED STATES PATENT OFFICE.

WILLIAM B. TURNER, F BOSTON, MASSACHUSETTS, ASSIGNOR. TO LEATHERFINISHING MACHINE COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORA- TION OFWEST VIRGINIA.

LEATHER-GLAZING MACHINE.

To all whom it may concern.-

Be it known that I, WILLIAM B. TURNER, of Boston, in the county ofSuffolk and State of Massachusetts, have invented certain new and usefulImprovements in Leather-Glazing Machines, of which the following is aspecification.

This invention has relation to those leather finishing machines whichare known as glazing machines by which the sur-' face of the leather issmoothed, stretched and polished.

The object of the invention is to provide a machine by which theoperation of glazing may be so expedited, that a greater number ofdozens of skins may be glazed by an operator than has hitherto been possible. To this end I employ a plurality of agates or glasses, so that asingle stroke of the operating head will treat a broad stripe on theskin, and consequently a single stroke of the head will accomplish asmuch work as a number of strokes of a head which is equipped with asingle agate or glass. These agates or glasses are preferably arrangedin two rows with the agates of one row breaking oint with those in theother, so that there is no portion of the stripe untreated. Furthermore,the agates are all mountedso as to be capable of inde pendent movement,whereby each may accommodate itself independently of the others to thatpart of the skin which is being engaged by it. The illustratedembodiment of the invent-ion is provided with an independent holder foreach agate, and each holder is mounted upon the head in such manner thatit may swing about two centers, there being a spring or equivalent meansfor pressing the holder toward the skin.

A work table having a plane surface is utilized for supporting the skinundergoing the glazing operation, and as the head is provided with tworows of agates, it is necessary that the agates travel, during thefinishing stroke, in a plane, without a variation in the pressure of theagates against the skins, except as may be occasioned by a varyingthickness of the skin itself. To this end, I have devised a novelmechanism for mount-ing and guiding the head. The head itself may takeany desired form of support for the holders, and the mechanismSpecification of Letters Patent.

Application filed. May 15, 1908.

Patented Oct. 31, 1911.

Serial No. 433,051.

referred to comprises at each side of the head, a pair of parallel linkswhich are fulcrumed upon fixed pivots, a pair of parallel links pivotedto the head and to the first mentioned links, and a slide to which thesecond pair of links is pivoted and which is movable at a right angle tothe work support or table. Any suitable means may be. employed toreciprocate the head, the link and slide mechanism just described,causing the head to move in a plane parallel to the surface of the tableor work support without varying the pressure of the agates upon theskin.

The table and the head are caused, by any convenient means to approacheach other at or near the forward stroke of the head and to separate ator near the completion of the rearward stroke thereof. This isaccomplished by vertically reciprocating either the head or the table asmay prove most convenient.

In addition to the features of the invention thus briefly pointed out,the invention comprehends other features of construction and arrangementwhich are illustrated upon the accompanying drawings, described in thefollowing specification and particularized in the appended claims.

Of the accompanying drawings, Figure 1 represents a side elevation of aglazing machine embodying the invention. Fig. 2 represents a front endelevation thereof. Fig.

3 represents a section on the line 33 of Fig. 4:. Fig. 4 represents thehead and the members carried thereby in section. Fig. 5 represent-easection on line 55 of Fig. 4;. Fig. 6 represents a section on line 66 ofFig. 1. Fig. 7 illustrates the connection between the table and thelever which raises and lowers it. Fig. 8 represents a section on line 88of Fig. 1. Fig. 9 represents in perspective view, a portion supportinglinks are attached.

Referring to the said drawings, a machine is there illustrated asembodying the invention, which comprises a frame consisting of standards10 10 connected by suitable cross braces 11, 12, 13 and 14. Journaled inthe standards is a prime power shaft 15 equipped with the usual pulley16, by which movement is imparted to it. From this power shaft motion istransmitted to an 'of one of the cross bars to which the table Ioperating shaft 17 ournaled in bearings in the standards through themedium of a pinion 18 and a large gear 19. From the shaft 17 power istransmitted to the movable elements of the machine.

The table or work support is indicated at 20. Its upper plane surface isadapted to receive and support a skin which is to be glazed. In theillustrated embodiment of the invention, this table is reciprocatedvertically, and to that end it is supported upon fourpairs of links 2122.; The links 22, are pivoted at their lower .ends to brackets 23 onthe cross bars 11 and 12, and the upper ends of the links 21. arepivoted to lugs on the cross bars 24 24 secured to the under side of thetable or support 20. The links 21 22 are also pivoted to longitudinallyarranged bars 25 which are .reciprocated longitudinally of the machineso that the links 21 22 will act as toggles to raise and lower the table20. .To prevent the table from moving longitudinally, there is :a link26 pivoted both to it and to one of the standards, as shown in Figs. 1and 2.

The-shaft 17 is: provided with-two path cams ,27 27 with which areoperatively en-v gaged rollers 28' onlevers 29. fulcrumed on studs 30projecting inwardly from thestandards, as illustrated in Figs. 1 and 6.The lower endsof theleversare connected-to the bars 25 by .theconnectionsof which one: is

illustrated in Fig. 7 This connection consists of two sleeves 3132 whichare connected by pintles 33 34 iwiththe lever 29 and the bar 25respectively. A connecting rod 134 is inserted in the sleeve 31 and isheld against axial movement by a screw pin 35 projecting into a groove36. The other end of the rod 34 is threaded and is screwed into athreaded aperture in thesleeve 32, and is. also provided. with. a locknut v37. This form of connection permits of anindependent adjustment ofeach of the bars 25 relatively to its operating lever 29, 50 that thetable may be properly leveled.

It will be observed from Fig.1 2, that the table is relatively wide. andis in fact much wider than the tables that have heretofore been made inglazing machines. This is done in order that I may .utlhze a pluralityof agates or glasses as previouslystatedn walls as illustrated in Figs.4 and '6. To

this head are connected a series of supports 43. Said supports .havehookedrear ends 44 which engage the rear wall of the head, said supportsbeing hungby hooks 45 from clips 46 resting on the upper edge of the thesupport.

wall 41, so that the front end of the supports may oscillate vertically.The sup ports are of different lengths as shown in Figs. 3 and 4, andthey are arranged in alternation so that each alternate supportproje'cts beyond the two adjacent ones. 'Between the front end of eachsupport and the head, there is arranged a compression spring as at 47.It will be observed that each of the supports has a lug 48 through whichis loosely passed a bolt 49, the latter projecting through an aperturein a Web 50 projecting forwardly from the front wall 40 of theintermediate wall 42 of the head. On

the upwardly projecting end of each bolt are a washer 51 and lock nuts52.; The spring 47 is arranged betweenthe web 50 and an adjustablecollar or springseat 53 onthe bolt. The lug 48 on each holder is clampedbetween the head of the bolt and the nut 54. WVith this construction,vitwill be seen that eachfsupport ispivoted at its, rear end so that itmay be removed independently of all the others, and also that thetension, which is exerted upon itsqfront end, may be,varied alsoindependently of the others.

agate or glass 56. Each,holder has trunnions 57 at its frjontand rearends into which project screw pins .58 I 58 passed through downwardlydepending lugs 59 on ment and-are arranged longitudinally of eachsupport so that the agate or glass carried by the holder, is capable ofpractically universal movement, that is, to say, it may oscillateaboutthe' axis of movement of. the support, and alsoiabout theaxisofmovement of theholder. Eachholder is pro videdi with. two clampingmembers 60 61,1

the former constituting an integral part of the holder, and the latterbeing removable, These clamps forma semicylindricalseat or socket forthe agate, and in, the seat thus formed by them, is placed a cushion=orshoe 62 of suitable material to prevent injury to the agate. The holder:has an aperture'ex- Swiveled. in each support thereisa holder 55 foranThese'screw pins are in aline- I tending from top to bottom as indicatedat v 64 to receive the. clampingunember 61,;and v in one wall of thisaperture, there is a curved convex rib65 whichfits a complemental grooveor socket 63 in the clamping member 61 so that the clamp may be swungabout the rib as a fulcrum. A setscrewj66 is passed through the holderso that its end bears against the upper end of the clamp 61, whereby itslower operative end may be caused to cooperate with the fixed member- 60in securely clamping and holding the glassor agate. Upon reference toFig. 3, it will be observed that each support and the holder carriedthereby, is relatively narrow and that the agate clamped in the holderprojects laterally of bot-h sides thereof.

By forming the-holders of two different transverse rows as shown in Fig.3, those in one row breaking joint with those in the other row. In thefront row, I may employ a suflicient number of agates to glaze a broadstripe on the skin. I have illustrated five of these agates, but it willbe understood that I may employ a smaller or a greater number. Byemploying two rows of agates, the skin is subjected to a double glazingduring each reciprocation of the head, and at the same time I preventportions of the skin from being left untreated. I consider it highlydesirable to so mount the agates that each is capable of universalmovement so that it may accommodate itself to the surface of the skin,and to any inequalities therein. It is not essential that the agates ofeach row should be in exact alinement although this disposition of theagates is convenient. Since I employ agates, one of which is in front ofthe other, it is necessary that the head should be arranged inparallelism with the table, and that this relation should not bedisturbed during the reciprocation of the head. To this end, I haveprovided a novel parallel link mechanism for supporting and guiding thehead.

Referring to Figs. 1, 2, 6 and 8, it will be seen that projectinglaterally from the head on each side are two pins or studs 67 68 as bestillustrated in Fig. 6. Pivoted to said pins or studs are links 69 and 70which extend upwardly therefrom, and are pivoted by studs 71 72 toslides 73 which are movable in vertical guides 17 4: formed in the sidestandards. The pins or studs 71 72 take the form of rods which extendentirely across the machine as shown in Fig. 2. Pivoted to the links 69and 7 O, at a point exactly midway between the axes of the studs 67 and71, or 68 and 72, are parallel links 74 75. This pivotal connection ismade in each case by a rod or shaft which projects through correspondinglinks 69 69 and 70 70, as indicated at 76 77 in Figs. 1 and 2. The lowerends of the links 74 are fulcrumed upon fixed studs 17 6 177 whichproject inwardly from the side standards. The distance between the axesof the pivots 67 and 76, 76 and 176, and 76 and 71 is exactly the same,and the same is true as to the pivots for the links 75 and 7 O. Thedistance between the studs 71 and 72 on the slide is equal to thedistance between the studs 176 and 177 on the head, and between thestuds 67 68 on the frame, the studs 71 and 17 6 and the studs 72 and 177being in lines perpendicular to the surface of the table or worksupport, the guideways 174; being also in lines perpendicular to thesurface of the table. In consequence of this construction andarrangement it will be seen that the heads are through the medium of thelinks, supported upon the studs 17 6 and 177, and that, when the head isreciprocated, it will travel in a plane parallel to the surface of thetable or work support.

Any convenient mechanism may be utilized for imparting a reciprocatorymovement to the head. I have shown a mechanism which serves its purpose,it consisting of a pitman 80 having attached to its front end, lugs 81,81 which are pivoted upon a pintle 82 passed through the lugs on therear wall of the head. The rear end of the pitman is attached to a crank83 secured on the shaft 17 which is split as shown in Fig. 6. As amatter of precise description, the crank 83 projects laterally from thelarge gear 19, and is connected with the other section of the shaftopposite to that to which the gear is secured, by means of an arm 84:.

I have previously stated that it is substantially immaterial whether thetable be moved relatively to the agate carrying head or whether thelatter be moved toward and from the table. As an illustration of this, Icall attention to the fact that the links 21 and 22, which support thetable, might be connected, without much change except as to theirlocation and length, to the studs 17 6 and 177, in which event, theguideways 174 will be made longer and the table would be mounted rigidlyupon the frame. If this were done, the agate carrying head would notonly be reciprocated longitudinally of the table, but would be moved upand down relatively to it.

The advantage of the machine embodying the invention which I havehereinbefore set forth, will be apparent at once to persons skilled inthe art. Heretofore the glazing of each skin required the expenditure ofconsiderable time even with the glass moving at high speed. With mymachine, I am enabled to drive the head at a lower speed and at the sametime to secure an output which is very much greater than has ever beenbefore possible.

Having thus explained the nature of my invention and described a way ofconstructing and using the same, although without attempting to setforth all of the forms in which it may be made or all of the modes ofits use, what I claim is 1. A leather working machine comprising amovable head, a plurality of working tools mounted on the head, a fiatwork support, and parallel compounded links supporting said head so asto guide the head in a rectilinear path.

2. A leather working machine comprising a movable head, a plurality ofworking tools mounted on the head, a flat work support, and compoundedoscillatory members supporting said head so as to guide the head in arectilinear path.

3. A leather working machine comprising a flat work support, a movablehead, a plurality of Working tools mounted on the head, means forreciprocating the head, and compounded oscillatory links supportingthehead so as to guide it in a rectilinear path.

4:. A leather Working machine comprising a flat WOIk support a Workingtool, compounded oscillatory links supporting said WVILLIAM B. TURNER.

Witnesses MARCUS B. MAY, P. PEZZETTI.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents Washington, D. O.

